Modules

Why do we need modules?

While the EORTC QLQ-C30 is an important tool for assessing the generic aspects of QOL, it has limitations and therefore a modular approach was adopted for disease-specific treatment measurements. An essential aspect of the “modular” approach to QOL assessment adopted by the EORTC QLG (Quality of Life Group) is the development of modules specific to tumour site, treatment modality, or a QOL dimension, to be administered in addition to the core questionnaire (EORTC QLQ-C30). The modules, like the core questionnaire, are designed for use in cancer clinical trials.

Since individual members or subgroups of the QLG are involved in module development, guidelines are needed and these have been developed to standardize the module development process. This ensures uniformly high quality across modules.

Phases of development

The development process is divided into three phases. Phase I and II modules are in an early stage of development. From completed Phase III onwards, modules are available for use. Modules that have completed Phase III are available for general use, but although they have been carefully developed
and tested for acceptability with patients, they have not undergone psychometric testing in a large international group of patients.

For more information, please see our Guidelines for Developing Questionnaire Modules.

Validated

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Phase III Completed

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In development

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